Image registration with sliding motion constraints for 4D CT motion correction

Alexander Derksen, Stefan Heldmann, Thomas Polzin, Benjamin Berkels


A common assumption in medical image registration is that the estimation of a globally continuous deformation field is plausible in reality. However, a sliding behavior of adjacent organ boundaries (e.g. lung and ribcage) cannot be described in a plausible way by a continuous deformation field. In this paper, we address this issue with a novel registration framework that explicitly models sliding of interfaces and can preserve discontinuities in the deformation field along predefined organ boundaries. Incorporated methods involve constrained nonlinear registration and a finite element discretization on unstructured tetrahedral meshes. Evaluation is based on the freely available DIR-Lab datasets.

Original languageEnglish
Title of host publicationBildverarbeitung für die Medizin 2015
PublisherSpringer Vieweg, Wiesbaden
Publication date01.01.2015
Publication statusPublished - 01.01.2015


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